发明名称 |
TV Camera with focus detecting means |
摘要 |
In the disclosed TV camera, a focus detecting device detects the focus of the image optical system by evaluating the image of the object whose image is to be picked up, on the basis of the picture image signal obtained at a predetermined position in the image pick up surface of the image pick up device. At least a part of the image to be evaluated is formed at a position within the scanning area of the image pick up device but outside of the effective image pick up area for TV signals. The image is evaluated on the basis of the picture image signal obtained at this position to detect the focus.
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申请公布号 |
US4301478(A) |
申请公布日期 |
1981.11.17 |
申请号 |
US19790097854 |
申请日期 |
1979.11.27 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SAKANE, TOSHIO;HOSOE, KAZUYA;KINOSHITA, TAKAO;TSUNEKAWA, TOKUICHI;KAWABATA, TAKASHI |
分类号 |
G03B13/36;G02B7/28;G02B7/38;G03B3/00;H04N5/232;(IPC1-7):H04N3/26 |
主分类号 |
G03B13/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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